IPE300 series engineering VFD Communication protocol
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9.4.3 Command code 08H, diagnosis
Sub-function code description:
Return data based on query requests
For example, to query about the circuit detection information about the VFD whose address is 01H,
the query and return strings are the same, and the format is described as follows.
RTU master command:
T1-T2-T3-T4 (time gap with a min. length of 3.5 bytes)
MSB of to-be-written data
LSB of to-be-written data
T1-T2-T3-T4 (time gap with a min. length of 3.5 bytes)
RTU slave response:
T1-T2-T3-T4 (time gap with a min. length of 3.5 bytes)
MSB of to-be-written data
LSB of to-be-written data
T1-T2-T3-T4 (time gap with a min. length of 3.5 bytes)
9.4.4 Command code 10H, continuous writing
The command code 10H is used by the master to write data to the VFD. The quantity of data to be
written is determined by "Data quantity", and a maximum of 16 pieces of data can be written.
For example, to write 5000 (1388H) and 50 (0032H) respectively to 0004H and 0005H of the VFD
whose slave address is 02H, the frame structure is as follows.
RTU master command (from the master to the VFD)
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